Perhaps you should try some spelling variations:
thu san » thuy san, thu ban, phu san
nang xa » nang x, lang xa, nang ma
va hanh » van hanh, va thanh, va danh
doi cua » dai cua, hoi cua, dong cua
san ky » sang ky, van ky, dan ky
ve dao » va dao, ve bao, te dao
di cua » dai cua, de cua, do cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thu san ky nang xa hoi. hieu ((ve dao) or (de dao)) duc va hanh ((di cua) OR (doi cua)) tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu san ky nang xa hoi. hieu ((ve dao) OR (de dao)) duc va hanh ((di cua) OR (doi cua)) tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu san ky nang xa hoi. hieu ((ve dao) or (de dao)) duc va hanh ((di cua) OR (doi cua)) tu".
• Adding a wildcard symbol may retrieve word variants: thu san ky nang xa hoi. hieu ((ve dao) or (de dao)) duc va hanh ((di cua) OR (doi cua)) tu*.